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Free Text Case Converter

Convert text between UPPERCASE, lowercase, Title Case, and Sentence case in one click, then copy the result.

Quick answer

A text case converter changes the capitalization of your text. UPPERCASE makes every letter capital, lowercase makes every letter small, Title Case capitalizes the first letter of each word, and Sentence case capitalizes only the first letter of each sentence.

Formula & method

Each mode applies a simple rule. UPPERCASE and lowercase map every letter. Title Case capitalizes the first letter of every word. Sentence case capitalizes the first letter after each sentence-ending punctuation mark (. ! ?). All of this runs in your browser, so your text is never uploaded.

Examples

Example 1: UPPERCASE
Input
the quick brown fox
Result
THE QUICK BROWN FOX
Why
Every letter becomes a capital.
Example 2: Title Case
Input
the quick brown fox
Result
The Quick Brown Fox
Why
The first letter of each word is capitalized.
Example 3: Sentence case
Input
hello there. how are you?
Result
Hello there. How are you?
Why
Only the first letter of each sentence is capitalized.

When to use this tool

  • Fixing text that was typed with caps lock on.
  • Formatting a heading, title, or list consistently.
  • Cleaning up copied text before reusing it.

Common mistakes

  • Expecting Title Case to follow a style guide. This capitalizes every word, including small words like “of” and “the.”
  • Assuming Sentence case fixes proper nouns — it only changes the first letter of each sentence.
  • Pasting formatting; only the text’s capitalization changes, not bold or links.

Frequently asked questions

What case options are available?

UPPERCASE, lowercase, Title Case (each word capitalized), and Sentence case (first letter of each sentence capitalized).

Does Title Case follow AP or Chicago style?

No. It capitalizes the first letter of every word for simplicity. Style guides keep certain small words lowercase, which this tool doesn’t attempt.

Will it fix proper nouns in Sentence case?

No. Sentence case only capitalizes the first letter of each sentence; names and other proper nouns are left as you typed them.

Is my text uploaded?

No. The conversion happens entirely in your browser; nothing is sent or stored.

Can I undo a conversion?

Just re-apply a different case, or retype. Each button transforms the current text in place.

What's the difference between Title Case and Sentence case?

Title Case capitalizes the first letter of every word (The Quick Brown Fox). Sentence case only capitalizes the first letter of each sentence (The quick brown fox. The next sentence.).

Can this tool handle abbreviations correctly?

No. It applies capitalization rules mechanically. Abbreviations like 'USA' or 'PhD' may not be recognized as special, so Title Case might treat them as regular words. Always review the output for proper nouns.

  • ✓ Free to use
  • ✓ No sign-up required
  • ✓ Runs entirely in your browser — nothing is uploaded.
  • ✓ Formula and method shown above
Last updated: How we calculateReport a correctionDisclaimer

Provided “as is” for general information only — results may be inaccurate, so verify before you rely on them. No warranty; use at your own risk.

Built and reviewed by HIFreeTools against the formula shown above and any authoritative references cited on this page. See our methodology and editorial standards.

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